Shizuku's childhood friend and one of the Three Beauties of Seitetsu, she has many admirers, Natsuru being one of them. She has a large collection of stuffed Entrails Animal series dolls and likes to present them to her friends; those who receive the dolls, however, tend to end up becoming Kämpfers. She began to develop an infatuation with Kämpfer Natsuru after being saved from Kämpfer Akane at the beginning of the series, later coming under the mistaken impression that the normal Natsuru is her rival for Kämpfer Natsuru's affection and consequently becoming somewhat hostile to him, a situation not helped after a misunderstanding in a very compromising situation leads her to think Natsuru is cheating on the female Natsuru.
Kaede's infatuation with Kämpfer Natsuru quickly grows into an obsession as she begins to make romantic and later erotic advances to Natsuru's female form, to the point of repeatedly barging in on her taking a shower and sneaking into her futon at night. Later she is suspected by Shizuku to have connections with the Moderators as well as having something to do with the appearances of the White Kämpfer, and that she may have been using hypnotic power to further manipulate Natsuru into doing her bidding, taking advantage of his existing obsession with her (It is also possible that his obsession with her is entirely a result of this power). It is eventually confirmed on separate occasions when the White Kämpfer swear loyalty to her and when, without possessing any bracelet so characteristic of the Kämpfer, she wields both a katana and a Beretta 93R against the Red and Blue Kämpfer coalition.
Later, it is also implied that she knew from the very beginning that there were not two Natsurus, but just one who switches gender (she personally reveals it in the anime whereas in the novel it is her White Kämpfer who would do so) and that she was merely feigning ignorance at the start, although her obsession with his female form turned out to be real, even while knowing his true nature. Kaede is shown to be strongly into female-female romance, where she is implied to be having erotic relationships with her White Kämpfer, and she even stated that she hates men and thinks they are useless. Kaede's extensive collection of Entrails Animals is shown to be the source of the Entrails Animal messengers that turn people into Kämpfer, that she dotes on her collection, to the point of calling them "her children" and her favorite is the prototype, Burnt Alive Lion.